470 Middlefield Rd, Atherton, CA 94027 Property Records

San Mateo County property record for 470 Middlefield Rd, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	3 bd · 3.5 ba · 2,980 sqft · built 1951
Lot Size	1.1 acres (48,180 sqft)
Owner	2 Individual Names on Record
Last Sale	$5,310,000 (May 2021)
Tax Bill	$65,753 (2025)
Deeds & Mortgages	May 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`061-360-130`

Property Details

APN / Parcel Number

Primary APN	`061-360-130`

Interior

Bedrooms	3 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	1 Story
Building Area	2,980 sqft Living Area
1st Floor Area	2,450 sqft
2nd Floor Area	530 sqft
Family Room	Family Room

Exterior

Year Built	Built 1951
Effective Year Built	Effective 1976
Lot Area	48,180 sqft
Lot Dimensions	219 ft deep x 220 ft wide
Garage Area	1,180 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	470 MIDDLEFIELD RD
City	ATHERTON
State	CA
Zip	94027-3216
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	220 FT X 219 FT ON SWLY LINE OF MIDDLEFIELD RD COM 279.48 FTNWLY FROM OAK GROVE AVE PTN OF LOT 245 & 250 MENLO PARK VILLA ASSN RSM 2/40
Legal Subdivision	MENLO PARK VILLA
Legal Lot Number	245
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1005
Census Tract	611500

Owner

Source: San Mateo County records, as of July 15, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	470 MIDDLEFIELD RD, ATHERTON, CA 94027-3216
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 7, 2021 · Amount on Record
Deed Sale	May 7, 2021 · Amount on Record
Prior Sale	May 15, 2013 · Amount on Record
Deed Document Number	202173459
Record Updated	Sep 20, 2026

May 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 7, 2021
Property Address	470 MIDDLEFIELD RD, ATHERTON, CA 94027-3216
Document Number	0000073459
Map Reference	MB 2 PG 40
Instrument Date	May 5, 2021
Instrument	2021-073459
Transaction Type	Transfer
Record Updated	Aug 5, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$5,841.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	470 MIDDLEFIELD RD, ATHERTON, CA 94027-3216

Mortgage

Document Number	0000073460
Date	May 7, 2021
Instrument	2021-073460

Lender

Name	MUFG UNION BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2051

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

Type	Name
State	California
Municipality	Atherton Town
County	San Mateo County
Elementary School District	Menlo Park City Elementary School District (KG - 08)
Secondary School District	Sequoia Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$5,862,667 (+2%) Land $5,520,403 Building $342,264
2025	$65,753.00 (+4.84%)	$5,747,713 (+4.04%) Land $5,412,160 Building $335,553
2023	$62,715.00 (+2.43%)	$5,524,524 Land $5,202,000 Building $322,524	$5,637,420
2022	$61,227.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	4 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 96% of the US · lower than 97.4% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CALIFORNIA WATER SERVICE - BEAR GULCH private · serves 60,382 people · EPA ID CA4110006
Water Source	Surface water
Last State Inspection	Feb 2025
Lead	4 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 167 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Race Communications Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
AT&T Fiber · DSL	1,000 / 1,000
Verizon Fixed Wireless	300 / 20

May also be available: Sonic Telecom, T-Mobile.

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